Type-writing machine.



B. P. FOHTIN. TYPE WRITING MACHENE.

Patented June 29, 1915.

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B. P. FORTIN.

TYPE WRITING MACHINE.

APPLICAIION FILED JAN. 6.- l9l3.

12,144,978. Patented June 29, 1915. 3$HEETS-SHEET2.

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0 0 0 a INVENTOB: WITNESSES; Z5 0 0 a ny! WWW BY ATTOB STATES FATE OFFICE.

BENJAMIN P. FORTIN, OF HARTFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD TYPEWRITER COMBANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent. Patented J fine 29, 1915.

Application filed January 6, 1913. Serial No. 740,324.

To all whom it may concern:

Be it known that I, BENJAMIN P. Fon'rm,

a citizen ofthe, United States, residing in Hartford, in the colmty of Hartford and State of Connecticut, have invented certain new and useful Improvements in .ype- :Writing Machines, of which the following is-a specification. I Myinvention relates to tabulating mechanism for typewriting machines, and especially to combined column-selecting and ,decimal-tabulating devices.

My invention is shown as applied to an Underwood typewriting machine, in which a carriage is propelled by a spring-barrel and is controlled by an escapement mechanism. The carriage usually comprises a rack bar on which column-stops may be selectivcly positioned. In the usual form of the decimal-tabulating device, counter-stops are arranged at letter-space intervals, and may be projected into the path of said column-stops .on the carriage rack bar, and so arrest the carriage at selected positions in the different columns.

For convenience in positioning the carriage, the tabulating keys which control the counter-stops are usually arranged to release the carriage from its escapement mechanism, thus allowing the carriage to ave forward until it is arrested by the cooperation of the rack stops with the counter-stops.

In the present'invention a set of columnselccting keys is provided in addition to the decimal keys, andv these column keys are provided with connections by which they :may determine .in what column the carriage may be arrested by said decimal stops. Thus from one point of view two sets of tabulating keys are provided, which cooperate in order to produce the stopping of the carriage at any required position. From another point of view, may be regarded as under the joint control of the carriage and the decimal keys. To effect this joint control, the decimal keys may position interponents which determine which counter-stop (or decimal stop) is to be effective, and the typewriter carriage itself determines when said counterstop may become effective. The columnselecting keys then will cooperate with the carriage to determine whether the carriage in a given position shall be effective to prothe decimal stops ject a decimal stop at any given time. For accomplishing this result, there may. be the usual set of rack stops on the carriage, and dogs may be mounted on said rack, which dogs may be of various shapes, and therefore may be arranged to selectively cooperate with a universal member or lever which is positioned by the column-selecting keys. Said dogs are preferably formed on the rack stops and are of various lengths, and the universal lever may be swung by the column-selecting keys so as to lie in the path of one or another of said dogs and to be struck thereby. l/Vhen so struck, the lever may cause the interponent, which has been set by the decimal key, to raise its particular counter-stop to effective position where it will project into the path of a column-stop and so arrest the carriage. One set of said keys, preferably the decimal keys, may be arranged to release the can riage from its escap'ement mechanism so that it will travel freely until it is thus arrested by one of the decimal stops. In

order to prevent this release of the carrlagefrom taking place before a columnselecting key has been depressed to select the rack stop which is to arrest the carriage, the decimal keys may be locked against operation until after a column-selecting key is depressed. This locking prevents improper operation of the tabulating mechanism by depressing the tabulating keys in the wrong order. It will also be seen that the above-described mechanism keeps the key-controlled stops in ineffective position until the proper column is reached. If the above-described dogs are formed as extensions of the stops, it'will be seen that the mere shifting of a stop shifts the column selected thereby, thus furnishing exceedingly simple means for varying the position of the column. 1

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure l is a sectional s1de new of an Underwood typewriting machine showing my invention applied thereto. Fig. 2 is a perspective'view of many of the principal parts of my in: vention. Fig. 3' shows the relation of the parts of the-tabulating mechanism when a column-selecting key has been depressed. Fi 4 shows the same parts when a column-' selecting key and a decimal-tabulatingkey have both been depressed. Fig. 5 shows said parts at the moment. when the carriage is arrested. Fig. 6 isanfront view of some of the parts in the position seen 1n Fig. 3. F ig. 7 is a similar view of the parts seen In the position in Fig. 5. Fig. 8 shows dia-v press bell' cranks 3 to swing type bars l upwardly. and rearwardly, so as to cause type 5 0a.. saidijhars to write on a platen 6 in a carriage 7. Said carriage rides on a rail 8, and is drawn forward in letter-feeding direction by means of a springbarrel 9 and is controlledin said drawing by means of an escap'emeritwheel 10; said escapement wheel being "controlled by dogs 11 and 12, which are operated by means of a frame 13 forming part of a universal bar l,'operated by heels on the type bars. The carriage is controlled by said escapement wheel 10 by means of a pinion 15 connected to the escapement wheel; said pinion meshing in a rack 16 mounted on arms 17, which arms are ,pivotally mounted on the carriage at 18. If

the rack. 16 is lifted from the pinion 15, the carriage is freed from the control of the escapement wheel, and it is drawn. forward by means of the spring-barrel 9 until a stop 19 adjustable on a rack bar 20 of the carriage strikes against sto 21, which arrests the carriage, semen in *ig.

' For raising the plunger stops 21 to the eifehtive position shown in Fig, 5, each of said stops carries pivoted thereon an inter- .ponent in the form of a hook 22, which, in a manner hereinafter described, is moved forward into the position seen in Fig. 4:, where it overlies a universal operator 23 whenever the tabulating mechanism is operated. When in the position seen in Fig. 4:, any upward movement of the universal operator 23 will raise the stop 21, which has its interponent set to the position shown in Fig. 4:. A detector bar 28 moves the operator 23 to raise said stops 21. To bring this about, a column-selecting key 24, when depressed, moves down its key lever 25, which is pivoted at 26, soas to swing downwardly a universal frame 27 said frame being connected to swing rearwardly the detector bar 28 into the path of a dog or projection '29 formed as a forwardly extending arm on the lower fork of the stop 19 on the carriage rack bar 20. Said detector bar 28, as best ,seen in Figs. 2, 6 and-7,.is formed as a bell crank v pivoted on a rotatable stub shaft 30 and comprises an arm 31, which extends horizontallyso that it overlies one armof a said frame and the a counter or plunger lever 32*;pivoted at 33 on the frame of the machine, while the opposite end of said lever underlies a downwardly extending lug 34 forming part of. said universal operator 23. Thus it will, be seen that ifothe carriage 7 in its travel brings a dog or projection 29 against the detector bar 28, said detector bar will cause the universal operator 23 to rise upwardly and raise any decimal stop 21 of which the interponent 22 has been moved into effective position. Said detector bar is confined against overthrow by a square frame 28 integral with the frame of the tabulating mechanism, said frame surrounding the upper end of said bar.

The connections between the universal frame 27 and the detector bar 28 include a rearwardly extending arm 35 formed integral with said frame and a link 36 pivotally attached to said arm, and at its upper end pivoted to a rock'arm'37 fast on the stub shaft 30, which carries said detector bar 28. Said frame 2'7Qis normally held up-- ward so as to swing the detector bar 28 to ineffective position by means of a spring '38 placed forward of the shaft 26 "on which tabulator key levers 25 are pivoted. The key levers 25 depress saidframe 27 until the levers are arrested by a stop rod 82, which lies below said levers and limits the throw of said levers. A crossbar 39 formed as the forward end of said frame underlies the key levers 25, and is cut away, as best seen in Fig. 9, under the various key levers 25 so that the left-hand key lever will depress said cross-bar 39 con: siderably and so swing the detector bar 28 to its rearmost position, where it will intercept the shortest projection or dog 29, as seen diagrammatically at the upper part of Fig. 8. The key lever 25 next adjacent to the left hand one, when depressed, sinks part way idly because of a notch 40 cut in said bar 89. Thus this lever will swing the detector bar 28 not quite so far rearwardly as will the extreme left-hand lever. The osition to which this key lever 25 will swing the detector bar 28 is shown in next to the-top diagram of Fig. 8. There'is a similar notch 40 or each of the other key levers 25, each successive notch to the right being deeper than the one immediately to' the left of it. The result of this is that each of the levers 25 will throw the universal frame 27 slightly less than the lever 25 immediately to the left would, and therefore will give the detector bar 28 less movement rearwardly, and therefore bring said detector bar into the path of only a longer dog than the key lever to the left would. From this it results that if the stops 19 are arranged on the rack bar 20 the detector bar 28 into the path of the shortest projection and therefore arrest the carriage atthe first stop 19; said key lever, as seen in Fig. 2,-having its key marked 1 In the same way, the next to the left-hand key lever 25 carrying the key marked 2 in Fig. 2 will swing the detector bar 28 so as to arrest the carriage by the second stop 19, and so on for the keys marked 3 4 and 5 there being only five column-keys shown in the machine illustrated herein, although of course the number of said column-keys is immaterial.

In addition to the column-selecting 'keys, there is a series of decimal-selecting keys 41 (ten being shown herein). Each of said keys is ivotally attached to a rearwardly extending key lever 42 pivoted on the shaft 26 and engaging at its rear end a plunger 43, which plunger, whenever its key 41 is depressed, raises its upper end 44 to press a cam surface 45 thereon against a cam 46 formed on a downwardly extending arm 61 at the rear side of thehook 22, thereby forcing said hook over the universal operator 23 into the position shown in Fig. 4. When in this position, as has been above described, the universal operator 23 may raise into the path of the stop 19 on the carriage, the stop 21 on which said hook 22 is pivoted. When any one of the decimal key levers 41 is depressed, it swings a universal bar 47 resting on the heels 48 of the plungers 43, so as to release the carriage 7 and allow the carriage to travel free of its escapement until'it is arrested by the striking of the stop 19 against the plunger stop '21. The connections for accomplishing this release include an arm 49 extending forwardly from a shaft 50 on which the universal bar 47 is fast, a link 51 pivoted on said arm 49-rising upwardly therefrom to a rearwardly extend ing lever 52, which lever is drawn downward whenever the rearward end of the universal bar 47 is raised, swinging said lever 52 around its pivot 53 so that an idle wheel 54 on the opposite end of said lever will strike a smooth surface 55 on the rack bar 16, and

raise said rack bar out of the pinion 15, thus freeing the carriage from the escapement mechanism. The plungers 43 are limited in their throw by means of a rod 56, which extends across notches 57 in said plungers, and said plungers are normally pressed downward by means of a spring 58, best seen in Fig. 2, which surrounds the shaft 50 and presses the universal bar downward against the heels 48. In thus being pressed downward, each plunger 43 swings rearwardly the hook 22, which it controls: by means of a lip 59 formed on the upper end of said plunger, which overlies a ledge 60 on the downwardly extending arm 61 of the hook 22. Thus said plungers 43 in their normal position positively hold the hooks 22 to the rear of the universal operator 23, and so ineffective.

it has pivoted thereon an upthis purpose,

which by means wardly extending link 62,

of a slot 63 in its upper end engages a pin 64 fast on the universal operator 23. Said slot is so arranged that in the normal po sition of the parts seen in Fig. 1, the uni versal operator 23 is drawn downward so that it presses said stops 21 down by means of heels 65 formed integral with said stops. When, however, a decimal-tabulating key is depressed, as seen in Fig. 4, said link 62 rises idly past the pin 64, and when a stop 21 is moved to effective position. as seen in Fig. 5, the universal operator 23 can move upward, carrying its pin 64 with it idly-in of them and fast in depending arm 68 pivoted at the sides of the typewriting machine so that said rod normally catches under a hook 69 formed on each of the levers 42 of said decimal-tabulating keys. Whenever a column-selecting key 21 is depressed, an upwardly extending arm 70 thereon is arranged by means of a cam face 71 on its arm to swing said rod 67 forwardly against the tension of the spring Said universal bar 47 posi-, tively draws downward the stops 21, and for 72, which normally holds said rod in its ef-' fective position, so as to release the decimaltabulating keys. This looking rod prevents the carriage from being released from its escapement before a column-selecting key has been depressed; but when a column-key has been depressed, a decimal key may then release the carriage from the escapement. The throw of the stops 21 is limited by a rod 73 extending transversely, of them and riding in notches 74 thereon, so that the length of-the notches limits the throw of the stops 21.

The carriage of the typewriter in traveling carries a projection 29 from the shown in Fig; 6 to the dotted line position of Fig. 7 and in so moving, said projection passes over the rounded upper end 75 of the detector bar 28, and later will clear said bar. After clearing said bar, the projection 29 may have a considerable distance to travel before the stop 19 of which it forms a part strikes the raised plunger stop 21. Such a condition exists where a projection moves to the full line from. the dotted line position in I Fig. 7. In order to prevent the plunger stop ment 76 and a movable abutment 77, the latter pressed against the plunger stops by a spring 78 seated in a bore in the framework 79 of the stop mechanism. Said spring bears against a screw 80 threaded into the bore. The plunger stops 21 are held at letter-space intervals by spacing members 81 which are vertically corrugated to reduce the friction between them and the plunger stops. Said spacing members slide freely horizontally w ith the plunger stops as they are moved by the abutm :nt 77, and may be held against dropping rut by any suitable means. The plunger steps 21 are spaced from each other at their lower ends by the hooks 22.

-Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a carriage, of a tabulating key, a stop for arresting said carriage controllable by said tabulating key, a key ineffective alone to operate said stop, and means operated by the carriage for positioning said stop when said keys are operated.

2. In a typewriting machine, the combination with a carriage, of a'tabulating key, a stop, means operated by the carriage to set the stop to carriage-arresting position, an interponent set by said key to effect an operative connection between the stop and said means, and a second key ineffective alone to control the setting of said stop and controlling the operation of said tabulating key,

whereby said stop is set only when said keys have both been operated.

3. In a typewriting machine, the combination with a carriage, of' tabulating keys, stops for arresting said carriage, interponents set by said keys, a key inefl'ective alone to control the stops, a universal operator for said stops, and a swing bar set by said ineffective key for moving said universal operator.

4. In a typewriting machine, the combination with a carriage, of a tabulating-hey, an irterponent set by said key, astop operable by said interponent, a projection on said carriage, a universal operator, said interponcn-t operable by said operator, a second key,

and means controlled by said second key for causing said projection to actuate said universal operator, and thereby effect the operation of saidfirst-named stop.

5. In a typewriting machine,ythe combination with a carriage, of tabulating keys, interponents set by said keys, stops operable by said interponents, a universal operator,

keys, and means operated by said selector 79 keys for causing said swing bar to select one of said projections.

6. Inga typewriting machine, the combination with a carriage, of a tabulating mechanism comprising decimal tabulating devices and keys therefor, and also comprising column-selecting devices and keys therefor, said decimal and column-selecting devices constructed for seriatim operation as .distinguished from simultaneous operation, a lock normally holding against actuation all the keys in the set to be last operated, means controllable by the keys in the set to be first operated, for releasing said lock, means controlled by the keys of the set last operated to release the carriage, and means operated by the carriage to position the said decimal tabulating devices to arrest the carriage.

7. In a typewriting machine, the combination with a carriage and a stop thereon, of tabulator keys, column-selecting keys, said tabulator and column-selecting keys constructed to be operated seriatim, means noranally holding locked the keys to be last operated, means for unlocking said keys by the operation of the first-operated keys, a carriage-arresting device set when both keys are operated, and means operated by the carcarriage by the operation of both a decimal key and a column-selecting key.

9, In a typewriting machine, the combination with a carriage and column stops thereon, of decimal-selecting keys, col 'mnselecting keys, a plurality of counter-stops, 1 means for selecting said counter-stops by said decimal keys, means operated by the carriage to move a selected counter-stop into the path of a column stop, means normall holding said decimal keys locked, andmeans for unlocking said decimal keys by the operation of a column key.

10. In a typewriting machine, the combination with a letter-feeding carriage and a serlesof column stops thereon, of decimalselecting keys, column-selecting keys, counter-stops selected-by said decimal keys, means set by the column-keys to cooperate with said stops to select a column, and a connection between said cooperating means and 180 matte carriage stop and arrest the carriage.

11. In a typewritin'g machine, the combination with aletter-feeding carriage and a series of column stops thereon, of decimalselecting keys, column-selecting keys, counter-stops, an interponent for each decitrial-selecting key for selecting a counterstop by the operation-of its key, and means operated by the column-selecting keys to cause the selected counter-stop to be operated by its interponent when the carriage brings its proper columnstopn'ear the selected counter-stop.

12. In a. typewriting machine, the combination with a letter-feeding carriage anda series of column stops thereon, of decimalselecting keys, column-selecting keys,

counter-stops, an lnterponent for each deciinal-selecting stop, column-selecting, keys to selectively" cooperate with said column stops, and a universal operator-controlled by said detector bar for moving a counter-stop by its interponent to arrest said carriage. 4

13. In a 'typewriting machine, the combination with a letter-feeding carriage and a series of column stops thereon, of decimalselecting keys, columnselecting keys, counter-stops, an interponent for each decikey for selecting its countermal-selecting key for selecting its counterstop, a universal detector bar, variouslyextended projections on said column stops for operating said detector bar, and a versal operator swung by said detector bar for moving the selected counter-stop by its interponent stop carrying the projection which operates the detector bar.

14.111 a typewriting machine, the combi nation with a letter-feeding carriage and a series of col stops thereon, of decimalselecting kid $5, column-selecting. keys, counter-stops, an interponent on k each counter-stop, a connection for selectively set ting an interponent by a decimal-selecting key, means for selecting a column stop by a column-selecting key, and .a universal-o erator controlled by the stops for moving t 'e selected counter-stop into position to arrest the carriage. 4

15. In a typewriti-ng machine, the combination with a letterefeeding carriage and a series of column stops thereon, of decimalselecting keys, columnselecting keys, counter stops, an inter onent on each counter-stop, a connection orselectively setting an interponent by -a1 decimal-selecting key, a universal detector bar variously extended projections on said co stops for cooperating with said detector har,aconnection from the column-selecting keys to the a universal detector bar removed by the to arrest said carriage by the detector bar for positioning said bar to 'cooperate with said projections, and means actuated by said bar for operating said counter-stops by their interponents,

16. In a typewriting machine, the combination with a letter-feeding carriage and column stops thereon, of decimal-selecting keys, column-selecting keys, means holding said decimal-selecting keys locked, means re leasing said look by the operation of a column-selecting key, a plurality of counterstops, means for selecting said counter-stops by said decimal-selecting keys, and means operated by the carriage to project the selected counter stop into carriage-arresting position.

17. In a typewriting machine, the combination with a letter-feeding carriage, and a series of column-stops thereon, of-decimalselecting keys, column-selecting keys, means holding said decimal-selecting keys locked, means releasing said lock by the operation of a column-selecting key, counter-stops selected by said decimal-selecting keys, means set by the column-selecting keys to cooperate with said column stops to select a column and operated by the carriage, and a connec; 7

tion from said cooperating means for causing'a counter-stop to arrest said carriage by the stop selected. i p

18. In a typewriting machine, the combination with a letter-feeding carriage and a series-of stops thereon, of decimal-selecting keys, column-selecting keys, means holdin said decimal-selecting keys locked, means re easing said look by the operation of a column-selecting key, counter-stops, an interponent operated by each'decimal-selecting key and connected to a counter-stop, and means operated by the column-selecting keys to cause the counter-stop to be operated by its interponent when the carriage brings its proper column-stop nearthe selected counter-stop;

19. In a typewriting machine, the comof a column-selecting key, counter-stbpsjan interponent between each decimal-selectin-g key and its counter-stop, a universal detector bar moved by the column keys to selectively cooperate with said carriage-stops, and a universal operator controlled by said detector bar for moving a counter-stop by its interponent to arrest said carriage.

20. In a typewriting machine, the come bination with a letter-feeding carriage and a series of column stops thereon, of decimalselecting keys, column-selecting keys, means holding said decimal-selecting keys locked, means releasing said lock by the operation of'a column-selecting key, counter-stops, an

lad

interponent between each decimal-selecting key and its counter-stop, a universal detector bar, variously extended projections on said column stops for operating said detector bar, and a universal operator swung by said detector bar for moving the selected counterstop by its interponent to arrest said carriage by the stop carrying the projection operating thedetector bar.

21. In a typewriting machine, the combination with a letter-feeding carriage and a series of column stops thereon, of decimalselecting keys, column-selecting keys, means holding said decimal-selecting keys locked, means releasing said look by the operation of a column-selecting key, counter-stops, an interponent on each counter-stop, a connection fpr selectively setting an interponent by a decimal-selecting key, means for selecting a column stop by a column-selecting key, and a universal operator controlled by the column stops for swinging the selected counter-stop to arrest the carriage. I

22. In a typewriting machine, the combination with a letter-feeding carriage and a series of column-stops thereon, of decimalselecting keys, column-selecting keys, means holding said decimal-selectingkeys locked,

means releasing said lock by the operation of a column-selecting key, counter-stops, an interponent on each counter-stop, a connection forselectively setting an interponent by a decimal-selecting key, a universal detector bar,-variously extended projections on said stops for cooperating with said detector bar, a. connection from the column-selecting keys for causing said projections to cooperate with said bar, and means for operating said counter-stops by their interponents from said operator.

23. In a typewriting machine, the combination with decimal-selecting keys and column-selecting keys, of a locking'bar normally holding saiddecimal-selecting keys, means for releasing said bar by the operation of a column-selecting key, a stop, and means set by a column-selecting key and actuated by the carriage to move the stop into position to arrest the carriage.

24. In a typewriting machine, the combination with a carriage and an escapement normally controlling said carriage, of means for releasing said carriage from said escapement, decimal keys operating said releasing means, a lock normally holding said decimal keys, column-selecting keys arranged to release said lock, decimal stops, and means set by the column keys and actuated by the carriage to move the decimal stops into carriage-arresting position. v

25. Ina typewriting machine, the combination with a carriage and an escapement normally controlling said carriage, of means for releasing said carriage from said escapement, decimal keys operating said rele'asi'ng means, counter-stops, an interponent for each counter-stop set by its decimal key, a lock normally holding said decimal keys, and column-selecting keys arranged to release said lock and permit a counter-stop to be selectively set at a column by its interponent.

26. In a typewriting machine, the combination with a carriage and an escapement normally controlling said carriage, of means for releasing said carriage from said escapement, decimal keys operating said rcleasing means, counter-stops, an interponerit for each counter-stop set by its decimal key, a lock normally holding said decimal keys, column stops on said carriage, column-selecting keys, a universal detector bar moved by said column keys to cooperate selectively with said column stops, a universal operator for said interponents, and means for causing the operation of a column-selecting key to unlock said decimal keys and position said detector bar to be actuated by the carriage and actuate said universal operator to cause the operation of a counter-stop by its interponent.

27. In a typewriting machine, the combination ofa carriage, stops therefor, a set of keys, means operated by said keys to select the said stops, a universal lock for said set of keys, a second set of keys controlling said lock, and a universal operator controlled by said second set of keys and actuated by the carriage to project the selected stops to arrest the carriage.

28. In a typewriting machine, the combination with a carriage, of plungers, a universal operator for the plungers, keys, means operated by the keys for selecting the plungers, and means operated by the carriage to actuate said universal operator and project the selected plungers.

29. In a typewriting machine, the combination with decimal-selecting keys, of column-selecting keys, a lock for said decimalselecting keys, a universal frame for said column-selecting keys, means for releasing said lock and variably actuating said frame by said column-selecting keys, intcrponents set by said decimal-selecting keys, and means for actuating said interponents controlled by the variable'operation of said frame.

30. In a typewriting machine, the combination with decimal keys and column keys, of levers for said keys, hooks or projections, on the levers of the decimal keys, a locking bar extending transversely of the key levers, said locking bar supported to swing in the direction in which the key levers extend, into and out of a position in which it is engageable by said hooks to lock the decimal key levers, and

cams on the levers of the column keys, said cams projecting upwardly beside the lockmg bar to directly engage the same, and each operable when the corresponding column key is depressed to swing said locking ing key operated.

32. In a typewriting machine, the combination with a carriage, of projections there on, a bar movable to cooperate selectively with said projections, a series of column-selecting keys, a universal frame variably moved by said column-selecting keys, a link operatively connecting said frame to said bar,

and a cooperating set of decimal-selecting keys.

33. In a ty'pewriting machine, the combination with tabulating keys and a carriage, of columnstops, counter-stops controlled by said keys, an escapement controlling said carriage, a universal bar operated by said keys, a carriage-release operated by said universal bar, an interponent for each counter-stop set by its key, means for caus ing the carriage to actuate said counterstops through said interponents, and a set of column keys for determining in which column a counter+stop shall operate.

34. Ina typewriting machine, the combination with a detector bar, of a series of stops, interponentscarried thereby, a series of normally locked keys for operating said interponents, and a series of keys arranged to set said bar and unlocksaid locked keys.

35. In a typewriting machine, the combination with a carriage and an escapement therefor, of a series of stops, an interponent for each stop, keys for setting said interponents and releasing said escapement, a lock for said keys, a key arranged to un lock said locked keys, and means set by said unlocking key to make the carriage effectiveto set said stops.

36. In a typewriting machine, the combination with a locked set of keys, of a series of stops, a series of interponents between said keys and stops for setting the stops, said interponents controlled by said keys, an actuator, a key for positioning said actuator and unlocking said keys, a carriage, an escapement forsaid carriage, and means for releasing said carriage from its escapement when an interponent is set by its key.

37. In a typewriting machine, the combination with a carriage, an escapement therefor, and a key arranged to release the carriage from the escapement, of an interponent set by said key, a stop connected to said interponent, a second key, a device set by said second key to be operated by the carriage and thereby set said stop, and means locking said first key. till the second is operated.

38. In a typewriting machine, the combination with a carriage, of an array of decimal stops individually movable into cf tective position to arrest the carriage, an array of keys for selectively determining which stop is to be moved to effective position, and means operated by the typewriter carriage for moving the selected stop to effective position.

39. In atypewriting machine, the combination with a carriage, of an array of decimal stops individually movable into etfective position to arrest the carriage, an array of keys for selectively determining which stop is to be moved to effective position, and means settable 'on the typewriter carriage for moving the selected stop to efiective position 40. In a typewriting machine, the combination with an array of decimal stops, of an array of keys for determining which stop -is to be effective, projections settable on the typewriter carriage for moving said stops to effective position, and keys for selecting the projection to move said stop.

41. In a typewritingmachine, the combination of a carriage, a set of stops, two sets of keys jointly controlling said stops, one set operable to select the stops, and means controlled bythe other set and operated by the carriage to move the selected stops int position to arrest the carriage.

42. In a typewriting machine, the combination with a carriage, of column stops thereomdenominational stops and keys, column-selecting keys, and means controlled b the joint operation of a denominational key and a. column-selecting key and actuated by the carriage to set a selected denominational stop into the path of a selected column stop, and thereby arrest the carriage at a position corresponding to the selected denominas tional and column-selecting keys.

43. In a typewriting machine, the combination with a carriage, of column stops thereon, column-selecting keys, denominm tional stops, column-selecting means actuated by said keys to positions selectively determined by said keys, means operable by the carriage to position'a denominational stop to arrest the carriage by means of the column stop corresponding to the actuated column-selecting key, denominational keys, and means operated thereby to determine which denominational stop shall be positioned by the carriage.

44. In a typewriting machine, the combination with a carriage, of column stops thereon, a column-selecting key for each stop, column-selecting means set by said keys to be operated by the column stop corresponding to an actuated column-selecting key, decimal stops, decimal keys selectively operable conjointly with selected column keys, and means operated by the carriage through said column-selecting means to project a selected decimal stop into the path of the said column stop which actuates said selecting means, and thereby arrest the carriage at a position corresponding to the selected decimal and column-selecting keys.

45. In a typewriting machine, the combination with a carriage, column stops thereon, and column-selecting keys individual to said stops, of column-selecting means controlled by said keys for determining which of the column stops shall be effective, decimal stops selectively settable to intercept a selected column stop, decimal keys selectively operable to effect an operative relation between the corresponding decimal stop and said column-selecting means, carriage-restraining means, means operable when a decimal key and column-selecting key have been operated, to release the carriage and permit it to run forward, and means operated by the carriage through said column-selecting means to project the selected decimal stop into the path of they selected column stop, and thereby cause-the carriage to be arrested at the selected column and the selected decimal position in the column. Y

46. In a typewriting machine, the combination .with a carriage, column stops thereon, and column-selecting keys individual to said stops, of column-selecting means controlled by said keys for determining which of the column stops shall be efi'ective, decimal stops selectively settable to intercept a selected column stop, decimal keys selection between the corresponding decimal stop and said colunm-selecting means, carriage restrainingmeans, means operable when a decimal key and column-selecting key has been operated, to release the carriage and permit it to run forward, means operated by the carriage through said column-selecting means to project the selected. decimal stop into the path of the selected column stop, and thereby cause the carriage to be arrested at the selected column and the selected decimal position in the column, locking means for the decimal keys, and means actuated by ,the column-selecting keys to, release said locking means whereby a decimal key is operable only in conjunction with a column-selecting key.

4:7.In a typewriting machine, the combination with" a carriage, of column stops thereon, column-selecting keys, column-selecting means controlled by said keys and comprising a device settable by the keys to positions individual to the respective keys and in the'path of the corresponding column' stops, decimal keys, decimal stops controlled by said keys, means actuated by the decimal keys to effect an operative relation between the corresponding decimal stop and the said column-selecting means, and means operated by the decimal keys to release the carriage and cause the latter to operate through said column-selecting means to. project the selected decimal stop into the path of the selected column stop and thereby arrest the carriage in. the column and at the decimal position in the column corresponding with the selected stops.

BENJAMIN P. FORTIN. Witnesses:

FRANK A. COOK, W. M. DYORKMAN. 

